PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/13-19:28:10
G02     10.6           70.2               10.1 +/-    0.85      10.6 +/-    0.85  0.040 / 0.040
G05     161.9          44.7               13.4 +/-    0.57      18.1 +/-    0.57  0.020 / 0.040
G06     46.7           27.9                6.0 +/-    0.64      11.0 +/-    0.64  0.070 / 0.090
G12     248.4          79.8                9.2 +/-    0.58       9.3 +/-    0.58  0.080 / 0.060
G19     88.7           17.2                9.1 +/-    1.51      21.6 +/-    1.51  0.130 / 0.330
G20     197.1          12.8               14.8 +/-    4.94      38.9 +/-    4.94  0.120 / 0.330
G24     219.8          13.6               13.7 +/-    3.33      35.1 +/-    3.33  0.050 / 0.150
G25     310.3          46.2                9.6 +/-    2.18      12.7 +/-    2.18  0.090 / 0.190
G29     297.4          19.2                9.8 +/-    1.81      21.9 +/-    1.81  0.040 / 0.060